The First Distorted, Palm-muted Triplet

Most probably someone of the NWOBHM movement of the 70's. I couldnt say since i dont listne to many bands from it. Maybee even before then, pre-hendrix even, but back in those days it was more of an "overdrive" then distortion......well that doesnt help, but at least i added to the convewrsation lol